Clutch-ring-shearing machine



Nov. 4, 1930.

T. H.v BATr-:soN

CLUTCH RING SHEARINC MACHINE Filed May 12, 1928 3 Sheets-Sheet l Nl/ENTOR' )f/500mm ATTORNEY Nov. 4, 1930. T. H, BATESQN 1,180,259

GLUTGH RING SHEARING MACHINE Filed May 12, 1928 s ysheets-sheet 2 C .x A

12524 V 256 M, 75 59 60 75 S F6 PP54' j /N l/f/YTOR.'

BY 4l l I ATTORNEY l Nov. 4, 1930. T. H. BATESON CLUTCH RING SHEARING MACHINE Filed May 12, 1928 3 Sheets-Sheet 5 Patented Nov. 4, 1930 VUNITED SYITA'IESv Bnsros coMPANY, or WALroLn, MAssA trHoMAs. HANDEL iaArnsoN, or wALroLn, MAssA'cnnsartrs,.yAssIeNoRl To MULTI- CH'USETTS, A CORPORATION VOF MASSACHU- CLUToH-mNe-snnAniNe MACHINE Appncation filed May 12,

This invention involves a machine adapted especially for use in thev manufacture of clutch rings and otherfriction facings.

According to a common method of makiing clutch rings or clutch facings, a heavyiy asbestos tape is Woven Which subsequently is` Woundedgevvise on a mandrel tov produce a compact coil. Y Prior to being so vvound the tape usually is impregated with, materials @designed to bind its fibres together and give the finished product. the desired coefficient 0f friction, and the tape is baked While on the mandrel to cure the impregnating inedium. This makes the fabriorelatively hard l'fand stiff. After the baking operation has been completed the coil of tape is cut to form individual rings or facings, and this Operation must be performed accurately or the rings Will not be of the desired diamweter. It has been foundv impractical to make i the coil of the exact diameter required for the finished ring, and it has therefore been a common practice to unwindthe tape from the coil and cut it into lengths slightly gre'at-v "er Vthan that required for an individual ring or facing. Later the individual lengths so cut are placed on a form of the proper size and cut-accurately. Usually the ends ofeach ring are next stapled together and the rings Sciare then pressed to make them lie flat and bring them down to substantially the desired thickness.

The method of cutting the fabric, as above described, involves considerable hand labor and Wastes a percentage of the fabric which, Whilesmall in an individual ring,v still amounts to a very substantialitem in the course of a Weeks'production.

It is the general object of the present invention to economize both labor and materials in performing this cutting operation. The invention aims especially to devise a machine with which the cutting operation can be performed rapidly and accurately and in'which Waste of the facing material will be 3ractically l eliminated. i

The nature of the invention Will be readily understood from :the following description When read in connection' With the accompany-V "'ing drawings, andthe novel features Will be A wea `serial No. 27mm Y particularly pointed out .n in the "appended claims. yInthe drawings, y y Y Figurel 1s a perspective vievv of a machine constructedinacc-ordance with this inven y. tion; f i y Y F1g.`2 is a perspective View ofthe knifeV and they holder therefor; V

Fig. 3 is a perspective vieW,.partly in crossse'ction, showing the mechanism at. the head ofthe machine elevated above the coil;

F ig. 4 isa cross-sectional View through the upper part of the. coil illustrating certainv details of the mechanisml at .thehead of the machinef' M Fig. 5. is a mechanism;

Fig.` 6 isa plan view shovving a typical lengthof the strip severed from thecoil to Q form an individual ring; 4 e.

f Fig. 7is a planvievv of the parts forsup# y porting the ,coil 'in the machine; q Y

Fig. 8 is a view, partly invertical section and" partly" in side elevation, shoivino the platform on Whic'hfthe :coil is mounted 4and the supporting means therefor;

Figli) iS a sidevievv of one of the stops; and

'Fig 10` is a sectional view on the line The machine shown 'in the drawings includes a rotary table ,2ffor' supporting a lcoil sectional ,view of the cutting C ofclutch Vfacing or otherinaterial to .beir cut. It ivill'be observedthat the clutchnfac ing material flat andjis Woundedgewis'e so." that ladjantY turnsprogress axiallyof the` coil, and the planeof 'any individualcoil in` tersectsfthe axis of the coil, This table is supported by elevator mechanism Which Y comprises a platform 3 and a plunger 4 on the upper end of vvhich ithe platform is mounted, 'the plunger being guided for vertin,

cal movementv in agbasev 5. 'In order'to raise the platform the plunger l 'has'a rackG set into itaton'e sidethereof 4and secured rigidi ly thereto. 1 This rack meshes withV a'pinion 7 fast on a hoijiijontal'shaft 8 whichv is supported in bearings in the base 5. At a point outsidethe base the shaft `has-a ratchet Wheel 9 secured fast to it and arranged to beengaged by apavvl 10 `pivoted `on `the head i12 of a hand lever 13, the head being mounted to swing freely on the shaft 8. In order to hold the plunger 4 in itselevated position a vertical series of teeth 14 are formed in the face of the plunger opposite to the rack 6, and a horizontal dog 15 isrmounted in the base lto engage these teeth. Normally thev dog is held in Contact with the teeth by a coiled spring 16, Fig. 8, and for the purpose of releasing it vfrom the teeth the dog is formed on the end of a lever 17, fulcrumed at 18, and the lower end of the lever is arranged to lie-engaged by a short arm 19`secured on the rock shaft 20. This rock shaft projects through the base 5, and at 'a point outside the base a treadle' lever 21 is secured to it, as shown in Figs. 1 and 8. Consequently, by depressing the lever 21 the dog 15 will be drawn backwardly out of engagement with the teeth 14, aswill beclearfrom an inspection of Fig. 8. This will permit Athe platform 3 and the parts mounted thereon to drop.

The lowering movement of the platform is *I checked by a dash pot mechanism comprising a tube 23, Fig. 1, mounted in an upright position in the base and closed at its lower end by a plunger 24 which slides freely in this tube and which is mounted on the lower end of a rod 25 projecting from the bottomof the platform 3.

For the purpose of supporting coils C of different sizes on the table 2 and fastening them to the table, a spider 26, Fig. 7, is mounted on, or formed integral withv the table. As

shown, this spider has six arms, three of which are grooved and undercut to receive nuts for securing small plates 27 in different positions of radial adjustment. These plates rest on the arms and are adapted to form the chief bearing for the bottom face of the coil. Each plate has a screw28 projecting through it and threaded into the nut which slides in the groove for its respective arm.. The other three armswhich. alternate with those carrying the plates27 are grooved to receive slides 30 each slide carrying a jaw 31 for engaging the edge of the coil C, as best shown in Fig. 1. Springs 32 act on they inner ends of the slides 30 to press them outwardly, and they may be adjusted inwardly in unison by cams 33 secured in a ring 34 which encircles the table 2. Each slide 30 carriesA a roll 35 at its outer end to engage its respective cam 33. Consequently, by rotating the ring 34 relatively to the table 2 in a counter clockwise direction, Fig. "7, the cams 33' will act on the rolls 35 to move the slides' 30. inwardly and thus'cause the jaws 31 to grip the coil C and secure it in its upright position on the table V2. Each slide also. isV provided with a step 30 to cooperate with the plates 27 in supporting the coil.

Y When the coil has been fastened inthe manner just described the ring 34Y and table 2 may be locked against relative rotation by turning the locking bolt 35 down. This bolt is carried by a bracket 36 which is bolted to the table 2 andis provided with a part overhanging the ring 34, the bolt 35 being threaded through this overhanging part so that it j can be made to bind against the ring 34 and thus eliectually resist any tendency to rotate the ring relatively to the table.

For purposes which will later appear, it is Vdesirable to revolve the coi-l C, and for this reason the table 2 is mounted torotate on the platform 3 about a vertical axis. This is accomplished by supporting the table on rolls, one of which is Yshown at 38, Fig. 10, the entire series of rolls running in a circular groove 39 formed in the upper surface of the platform 3. A. marginal flange on the table 2 is guided by the peripheral surface 40, Fig. 10, of the raised Vcentral portion of the platform 3 and holds the table centered.

VIn this machine rotation of the coil C in a clockwiseA direction only is normally desirable. VA series of dogs 42 therefore are supported on projections 43, respectively, extending from the edge'of the platform 3. Each dog has a sharp point to engage the outer j surface of a wear piece 44 which is secured to the table 2. A spring 45 is provided to press each dog against the periphery of the ring 44, each spring being backed up by a plate 46. The angle of the dogs is such, as will be evident from an inspection of Fig. 7, that they permit a substantially free rotation of the table 2 in a clockwise direction but prevent any attempt to revolve the table in a reverse direction.

At the head of the machine devices are provided for unwinning the strip S of facing material. from the coil C and severing it to produce lengths suitable for individual facings. These parts are mounted on a platelike support 48, Figs. 1 and 3, which is secured rigidly to, or formed integral with, a central boss 49, Fig. 1. lVhen the machine is in operation the plate 48 rests on the top of the coil C, and the plate and the parts carried thereby are held centered with reference to the coil by means of an upright shaft 50, the upper end of which is removably secured tothe hub 49, while its lower portion is guided in a hole 51, Fig. 8, formed axially in the plunger 4. A hole 52, Fig. 7, is provided in the table 2 and through the platform to accommodate the shaft 50. At the upper end of the shaft a disk 53, Figs. 3 and 4, is removably mounted on the shaft 50 just below the plate 48, and serves to steady the upper' end of the coil C and to center this end of the coil, a disk being used which agrees substantially in diameter with theinternal diameter of the coil. One side of the plate 48 is of the bevelled edge 54 and assists in direct# and unwind the strip or separate itfrom the main body of the coil. This operation is performed by rotating thefplate or support 48 in a counter clockwise direction, and for this purpose a handle 55 is secured rigidly to the plate. As theplate is revolved its edge 54 lifts the strip of tape, forces it through a cutting mechanism and along an inclined sheet metal guiding plate 56, as clearly shown in G Figs. 1 and 3.

The cutting mechanism for shearing the strip S comprises a fixed block 57 secured rigidly on the support or plate 48 with a hardened shear lock 58, Fig-.5, set into it and se- -5 cured by screws, one of which is shown at 59.

Cooperating with this shear block a knife or cutter G0, preferably having an inclined edge as shown in ig. 2. This cutter is carried by a slide G1 -of dove-tail form and 9 mounted to reciprocate vertically in a bracket G2 which is formed integral with thehub 49 previously referred to. Ilhe cutter is actuated by an eccentric 63 working in a slot 64 iii the cutter slide 61, Fig. 2. The eccentric preferably is made integral with a shaft 65 mounted 'to rotate in the bracket 62 and having a collar (SG secured to its rearward end. A handle 67 is secured on the` forward end of the shaft and serves as the operating` means for the cutter.

y, surface of the bracket 62, the screw being threaded through the right angle portion of an L-sliaped arm 70 which is secured in groove 71, Fig. 2, formed in the slide 61.

For thepurpose of guiding the strip S of tape accurately to the cutting mechanism, a

til-shaped guide 72, which may conveniently be made of wire, is secured to the lower edge of the bracket G2. A roll 73 also is provided to engage the'outer edge of the strip S just before it reacliesthe guide 72 and thus to assist, if necessary, in directing the strip into latter guide.V This roll is mounted on a stud carried by andgprojecting downwardly fronia block 74, Figs. 1 and 4. A. horizontal rod 75 supports this block for adjustment toward or `from the axis of the support 48 and is itself supported in two upright pieces 76-76 whichare adjustably bolted to the bracket'62 so that the rolls 7 8 may be raised or lowered as desired. A plate 77 bent as shown in Figs. 8 and 4 preferably is riveted to the upper surface of the rsupporting plate 48 where its upper viuclired surface forms approximately a continuation ingthe tape upwardlyacross the cutter block Arranged to cooperate with the handle 55 are two stops 78 and 805 respectively; The

upright members 84-84 both' secured tothe base 5. Thestop may befsecured in its'adyjusted position by a bolt 85. A spring 86 tends to holdV the stop in its `raised position.`

Vns i.

The stop is similarly fmounted. It is se`l cured in its adjusted position by a bolt 187 and normallyis held raised by a spring 88.`

lt is equipped withv a handle 89 by means of movement of the handle. i

'which it may be lowered out-'of the-path of At certain timesitis desirable Ito compel the coil C tofrotatein a clockwisedirection with the handle 55" and support48.

es For this reason a small platel 90, Figs. -3 and 4,

is secured to a rack 91 and both are mounted to slide longitudinally at the lowerside. of..

the bar 55 which forms one element of the;

handle. A small pinion 92 meshesrwith the rack 91 and is mounted inl the fbar.55 'on' a shaft 93. F ulcrumed onthisfshaftis an auxiliary handle 94 carrying a long pinprovided with a screw tlireadedl portion 95 and a knurled head 96 byV means of which it may. be rotated tomove its point into or out of engagement withthe pinion 92. `A compression spring 97 interposedvbetween'the handles 55 and v94 normally holds the latter handle forward, as shown in Fig. 3. Vith; the parts in the position shown in this figure,

the rack 91 and platel 90 will be held with-` drawn orretracted. By pulling backwardly on the auxiliary handle 94V the slide 90 may be advanced and its toothed end engaged with the uppermost turn orturns of the-coil C, as shown in Fig; 4. The screw threaded` pin 9.5 permits the setting of the slide 90in accordance with the diameter of the/coil.

ln using the machine a coil C of Vfacing material is mounted on the table 2 in an upright position, substantially as shownin Fig.

1, and the supporting plate 48 and theV parts i carried thereby, are located approximately Yas shown in this figure.V The coil-C is practically always made slightly smaller in diameter than the diameter of the finished' clutch'ring so that in order to `cut oft a length suitable for an individual .ring itis .necessary to measure od' slightly more than oneturn of the coil. A typical length for an individualring is shown in Fig. 6 at S.

Assuming that a cut has just been made and that'the member 55 ofthe handle is rest- 'y ing against the stop 80, the en'd'of the strip S at this time will be exactly inV alinement,`

shown in Fig. dat a# The handle `55 now is with the edgeof the cutter 60. v`'This end and guiding devices.

' rests on the coil, follows it down.

the-.auxiliary handle 94 is drawn toward the handle 55, thus projecting the toothed edge ofthe slide 90 into en-gagement with the side ofthe coil asA shown in Fig. 4. While he holds the auxiliary handle in this position,

he swings the handle back, or in a clockwise direction, Fig. l, until its motion is stopped by the stop 7 8. This movement will rotate the entire coil C and result in carrying the endV a, Fig. 6, of the strip of tape backwardly or in aV clockwise direction, a distance equivalent to the distance a-b, Fig. 6. The auxiliary handle 94 now is released, thus freeing the coil C from the control of the handle 55. `The workman next presses down on the-handle 89 to move the stop 8O out of the path of the handle bar 55, and then rotates` the handle 55 in a counter-clockwise direction. Immediately after the handle 55 has passed the stop 80, the workman releases the handle 89 and he continues to swing the handle 55 around in counter-clockwise direction until it has made slightly more than one complete revolution and is stopped by the part 80. During this entire movement the coil C has remained stationary, any movement of it with the handle. 55 and parts moved thereby being prevented by the dogs 42. Consequently, this rotation ofhe handle with the supporting plate 48 and the partsmounted on it, results in unwinding slightly more than one turn of the strip S from the coil, moving this strip through the cutting mechanism, and stoppingV the relative rotation of the coil and cutting mechanism with the edge of the cutter directly over the line b, Fig.,6. The parts remain in this relationship while the operator swings the cutter handle 67 forward and severs the strip on the line b. It will be observed that the guide plate 56 serves to direct the part of the strip in advance of the cutter upwardly and into a position where it is entirely outof the way of the cutting The severed length is now removed and the operations. above described are repeated. As the unwinding and cutting operations proceed, the top of the coil gradually drops and the plate 48, iflliich is, therefore, necessary-to operate the lever 13 occasionally to raise the entire coil, care beinol taken not toelevate the coil far enough' tobcarry the bar 55 of the handle above the level of the stops 78 and 80.

Bv relatively adjusting the stops 78 and 8O toward or fiom each other, thel amount of overlap in the rings between the lines a andl b, Fig. 6, can be adjusted as desired so that. a predetermined length of facing material is severed in eac-h cutting operation, and

V this'length can be accurately adjusted. The

machine thus reduces materially the labor involved in cutting clutch rings from a coil,

and substantially eliminates waste of material, practically the only waste produced being the fraction of a ring which is left when the coil C becomes exhausted.

While I have herein shown and described a preferred embodiment of my invention, it will be understood that the invention may be embodied in other forms without departing from the spirit or scope thereof.

Having thus described my invention, what I desire to claim as new is:

l. In a machine of the character described, the combination of a support for a coil of flat facing material wound edgewise, cutting mechanism for severing said material substantially radially thereof, means operable to relatively rotate said coil and said mechanism, and means operative` during said relative rotation to guide a strip of said facing material unwound from said coil into cooperative relationship to said cutting mechanism.

2. In a machine of the character described, the combination of a support for a coil of fiat facing material wound edgewise, cutting mechanism for severing said material substantially radially thereof, means operable to relatively rotate said coil and said mechanism, means operative during said relative rotation to guide a strip of said facing material unwound from said coil into cooperative relationship to said cutting mechanism, and means for predetermining the lengths ofthe strips presented to said cutting mechanism for severing.

3. In a machine of the character described, the combination of a support for a coil of fiat facing material wound edgewise, cutting mechanism, means operable to relatively rotate said coil and said mechanism, means opera-tive during said relative rotation to guide a strip of said facing material unwound from said coil into cooperative relationship to said cutting mechanism, and means for stopping said relative rotation when a predetermined length of the strip has been brought into position to be severed by said mechanism.

4. In a machine of the character described, the combination of a support for a coil of fiat facing material wound edgewise, means at the end of said coil for guiding a strip of said material unwound from said coil, means operable to relatively rotate saidV guiding means vand coil to unwind said strip, and a cutting mechanism for severing said strip and toward which said strip is guided by said guiding means. j

5. In a machine of the character described, the combination of a support for a coil of flat facing material wound edgewise, means at the end of said coil for guiding a strip of said material unwound from said coil, means operable to relatively rotate said guiding sa." ILL) said strip, a cutting mechanism for severingsaid strip approximately radially and toward which mechanism said strip is guided by said guiding means, and means for stopping said relative rotation when a point at apredetermined distance from the end of the strip has arrived in cutting relationship to said mechanisin.

7. In a machine of the character described, the combination of'a support for a coil of facing material, means for guiding a strip of said material unwound from said coil, means operable to relatively rotate said guiding means and coil to unwind said strip, a cutting mechanism for severing said strip and toward which said strip is guided by said guiding means, and mechanism for relatively moving said coil and cutting mechanism in a direction substantially parallel to the axis-of the coil.

8. In a machine of the character described, the combination of a support for a coil of fiat facing material wound edgewise, means for guiding a strip of said material unwound from said coil, means operable to relatively rotate said guiding means and coil intermittently to unwind lengths of said strip from the coil, cutting mechanism to which said lengths are guided by said guiding means, said cuttiny?, mechanism being operable to sever said strip substantially radially thereof, and means whereby the individual lengths of the strips positioned for severing may be predetermined.

9. In a machine of the character described, the combination of a support for a coil of flat facing material wound edgewise, cutting mechanism, means for supporting said cutting mechanism at the end of said coil, means operable to relatively rotate said coil and said mechanism, means operative during said relative rotation to guide a strip of said. facing material unwound from said coil into coopeiative relationship to said cutting mechanism, and a stop for interrupting said relative rotation when a substantially predetermined length of the strip has been uiiwound and presented in cutting position, said stop being adjustable whereby said length may be adjusted.

10. In a machine of the character described, tlie combination ot a support for a coil of iat facing material wound edgewise, means at the end of the coil for guiding a strip of said material unwound from said coil, means operable to relatively rotate said guiding means and coil to unwind said strip, a cutting mechanism for severing said strip and towardwhich said strip is guided by said guiding means, means whereby the length of each strip so positioned for severing may be adjusted, and mechanism operable to relatively adjustsaid coil and said cutting and guiding means in a direction substantially parallel to the axis of the coil.

l1. In a machine of the character described, the combination of a table for holding a coil ot' facing material in an upright position, a support adaptedftorest on the top of said coil, cutting mechanismfor severing lengths of thel strip of material unwound from said coil, parts on said support for guiding said strip of material into position to be severed by said cutting mechanism, and means operable to relatively rotate said coil and said f guiding means. ,i

12. In a machine ofthe character described, the combination of a table mounted forv rotary movement and arranged to'hold a coil of facing material in an upright position, means 'for securing said coil on'said table, a support adapted to restlon the top of said coil, means for holding said support centered with reference to the coil, parts carried by said support for guidingsthe strip of material unwound fromsaidcoil away 'from the main body of the coil, cutting mechanism for severing said strip and to `which the strip is guided by said guiding means, and means operable to relatively rotate said table and said support to unwind saidstrip' and present it to said cutting mechanism.

13.y In a machine of the character described, the combination of a table-mounted for rotary movement and arranged to hold a coil of facing material in an upright position, a support adapted to rest on thetop of said coil, means for holding said support centered with reference to the coil, a cutting mechanism mounted on said support and adapted to sever the strip unwound from said coil, parts carried by said support for guiding said strip away from the main body of the coil and to said cutting mechanism, means operable to relatively rotate said table and said support to unwind said strip and present it to said cutting mechanism, and means for predetermining the lengths of the strips presented to said cuttingmechanism for severing, said predetermining means being` adjustable, whereby the lengths severed from the coil may be varied as desired.Y i i 14. In a machine of the character described,

the combination of a table mounted for rotary Y movement and arranged to hold a coil of fac` ing material in. an upright position, an elevating mechanism for raising and lowering said table, a. support adapted to rest on top of said coil, means including a shaft extending throughsaid coil `for holding said support centered with reference to the coil, cutting -mechanism mounted on said support for the combination of a table mounted for rotary movement and arranged to hold a coil of facing material in an upright position, a support adapted to rest on the top of said coil, means for holding said support centered with reference to the coil, a cutting mechanism mounted on said support and adapted to sever the strip unwound from said coil, parts carried by said support for guiding said strip away from the main body7 of the coil and to said cutting mechanism, a handle secured to said support whereby the support may be rotated to unwind saidstrip and guide it to said cutting mechanism, means for preventing said coil from Vrotating in oneV direction but permitting its rotation in a reverse direction, means operable to compel the coil to rotate with said support in a reverse direction, and stops serving to limit the rotation ot said support in both directions. A'

16. In a machine of the character described, the combination of a support for a coil of facing material, means for guiding a strip of said material unwound from said coil, a cutting mechanism for severing said strip and toward which said strip Vis guided by said guiding means, devices operable to relatively rotate said guiding means and coil including means for rotating said coilV in one direction and said mechanism in the opposite direction, and stops for limiting both ofsaid rotary movements. y

17. In a'machine of the character described, the combination of a support for a coil of Hat facing material wound edgewise, means for guiding a strip of said material unwound romsaid coil, means operable to rotate said guiding means intermittently about the axis of said coil to unwind lengths of said strip from the coil, cutting mechanism to 'which said lengths are guided by said guiding means, and means wherebyV the individual lengths of stri-ps positioned for severing by said cutting mechanism may be predetermined. y

I8. In a machine ot the character described, the combination of a support for ya coil of fiat facing material wound edgewise, means for guiding a strip of said material unwound from said coil, means operable manually to rotate said guiding means intermittently about the axis of said coil to unwind lengths of said strip from said coil, cutting mecha- THOMAS HANDEL BATESON. 

